CAT III - longitudinal autolanding LQR design
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Biblioteca Digital de Teses e Dissertações do ITA |
Texto Completo: | http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=2910 |
Resumo: | Automatic landings have been performed routinely for many years. However the design of flare and landing control systems with a suitable performance and a high level of reliability remains a very difficult task. In the present scenario, the increasing in the landing capacity of airports is mandatory by limiting the time each aircraft occupies the runway. To limit the occupancy time, the reduction of touchdown zone is essential since landings too close of the exit could result in a missed exit and therefore in a decreasing of landing rate. Give this context, the present work aims to propose an autoland flare law development for a 50 seat regional jet using Linear Quadratic Regulator technique. An accurate flare path, good rejection to turbulence, simplicity in implementation and, moreover, improved longitudinal touchdown dispersion are some of desirable features of design. In development of autoland control system, full feedback was used as control law configuration. Simulations were performed with non-linear model of the aircraft based on the equations of rigid body movement. The gains of LQR flare law were obtained though global optimization using Genetic Algorithms. The robustness of resulting close-loop system was tested with respect to ground-effect, wind shear and out-of-trim conditions. The performance of LQR flare law was compared with Model-Following design. Steady wind and turbulence models were used as disturbances for stochastic evaluation of the methods. The explicit flare trajectory defined in space, not in time, resulted on the improved touch down dispersion achieved by LQR design. |
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Biblioteca Digital de Teses e Dissertações do ITA |
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CAT III - longitudinal autolanding LQR designControle automático de aterrissagemRegulador linear quadráticoControle de vooControle longitudinalEstabilidade de aeronavesAerodinâmicaEngenharia aeronáuticaAutomatic landings have been performed routinely for many years. However the design of flare and landing control systems with a suitable performance and a high level of reliability remains a very difficult task. In the present scenario, the increasing in the landing capacity of airports is mandatory by limiting the time each aircraft occupies the runway. To limit the occupancy time, the reduction of touchdown zone is essential since landings too close of the exit could result in a missed exit and therefore in a decreasing of landing rate. Give this context, the present work aims to propose an autoland flare law development for a 50 seat regional jet using Linear Quadratic Regulator technique. An accurate flare path, good rejection to turbulence, simplicity in implementation and, moreover, improved longitudinal touchdown dispersion are some of desirable features of design. In development of autoland control system, full feedback was used as control law configuration. Simulations were performed with non-linear model of the aircraft based on the equations of rigid body movement. The gains of LQR flare law were obtained though global optimization using Genetic Algorithms. The robustness of resulting close-loop system was tested with respect to ground-effect, wind shear and out-of-trim conditions. The performance of LQR flare law was compared with Model-Following design. Steady wind and turbulence models were used as disturbances for stochastic evaluation of the methods. The explicit flare trajectory defined in space, not in time, resulted on the improved touch down dispersion achieved by LQR design.Instituto Tecnológico de AeronáuticaPedro PaglioneÁlvaro Vitor Polati de SouzaMarcos Vinícius Campos2006-03-10info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesishttp://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=2910reponame:Biblioteca Digital de Teses e Dissertações do ITAinstname:Instituto Tecnológico de Aeronáuticainstacron:ITAenginfo:eu-repo/semantics/openAccessapplication/pdf2019-02-02T14:04:59Zoai:agregador.ibict.br.BDTD_ITA:oai:ita.br:2910http://oai.bdtd.ibict.br/requestopendoar:null2020-05-28 19:40:18.694Biblioteca Digital de Teses e Dissertações do ITA - Instituto Tecnológico de Aeronáuticatrue |
dc.title.none.fl_str_mv |
CAT III - longitudinal autolanding LQR design |
title |
CAT III - longitudinal autolanding LQR design |
spellingShingle |
CAT III - longitudinal autolanding LQR design Marcos Vinícius Campos Controle automático de aterrissagem Regulador linear quadrático Controle de voo Controle longitudinal Estabilidade de aeronaves Aerodinâmica Engenharia aeronáutica |
title_short |
CAT III - longitudinal autolanding LQR design |
title_full |
CAT III - longitudinal autolanding LQR design |
title_fullStr |
CAT III - longitudinal autolanding LQR design |
title_full_unstemmed |
CAT III - longitudinal autolanding LQR design |
title_sort |
CAT III - longitudinal autolanding LQR design |
author |
Marcos Vinícius Campos |
author_facet |
Marcos Vinícius Campos |
author_role |
author |
dc.contributor.none.fl_str_mv |
Pedro Paglione Álvaro Vitor Polati de Souza |
dc.contributor.author.fl_str_mv |
Marcos Vinícius Campos |
dc.subject.por.fl_str_mv |
Controle automático de aterrissagem Regulador linear quadrático Controle de voo Controle longitudinal Estabilidade de aeronaves Aerodinâmica Engenharia aeronáutica |
topic |
Controle automático de aterrissagem Regulador linear quadrático Controle de voo Controle longitudinal Estabilidade de aeronaves Aerodinâmica Engenharia aeronáutica |
dc.description.none.fl_txt_mv |
Automatic landings have been performed routinely for many years. However the design of flare and landing control systems with a suitable performance and a high level of reliability remains a very difficult task. In the present scenario, the increasing in the landing capacity of airports is mandatory by limiting the time each aircraft occupies the runway. To limit the occupancy time, the reduction of touchdown zone is essential since landings too close of the exit could result in a missed exit and therefore in a decreasing of landing rate. Give this context, the present work aims to propose an autoland flare law development for a 50 seat regional jet using Linear Quadratic Regulator technique. An accurate flare path, good rejection to turbulence, simplicity in implementation and, moreover, improved longitudinal touchdown dispersion are some of desirable features of design. In development of autoland control system, full feedback was used as control law configuration. Simulations were performed with non-linear model of the aircraft based on the equations of rigid body movement. The gains of LQR flare law were obtained though global optimization using Genetic Algorithms. The robustness of resulting close-loop system was tested with respect to ground-effect, wind shear and out-of-trim conditions. The performance of LQR flare law was compared with Model-Following design. Steady wind and turbulence models were used as disturbances for stochastic evaluation of the methods. The explicit flare trajectory defined in space, not in time, resulted on the improved touch down dispersion achieved by LQR design. |
description |
Automatic landings have been performed routinely for many years. However the design of flare and landing control systems with a suitable performance and a high level of reliability remains a very difficult task. In the present scenario, the increasing in the landing capacity of airports is mandatory by limiting the time each aircraft occupies the runway. To limit the occupancy time, the reduction of touchdown zone is essential since landings too close of the exit could result in a missed exit and therefore in a decreasing of landing rate. Give this context, the present work aims to propose an autoland flare law development for a 50 seat regional jet using Linear Quadratic Regulator technique. An accurate flare path, good rejection to turbulence, simplicity in implementation and, moreover, improved longitudinal touchdown dispersion are some of desirable features of design. In development of autoland control system, full feedback was used as control law configuration. Simulations were performed with non-linear model of the aircraft based on the equations of rigid body movement. The gains of LQR flare law were obtained though global optimization using Genetic Algorithms. The robustness of resulting close-loop system was tested with respect to ground-effect, wind shear and out-of-trim conditions. The performance of LQR flare law was compared with Model-Following design. Steady wind and turbulence models were used as disturbances for stochastic evaluation of the methods. The explicit flare trajectory defined in space, not in time, resulted on the improved touch down dispersion achieved by LQR design. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-03-10 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/masterThesis |
status_str |
publishedVersion |
format |
masterThesis |
dc.identifier.uri.fl_str_mv |
http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=2910 |
url |
http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=2910 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Instituto Tecnológico de Aeronáutica |
publisher.none.fl_str_mv |
Instituto Tecnológico de Aeronáutica |
dc.source.none.fl_str_mv |
reponame:Biblioteca Digital de Teses e Dissertações do ITA instname:Instituto Tecnológico de Aeronáutica instacron:ITA |
reponame_str |
Biblioteca Digital de Teses e Dissertações do ITA |
collection |
Biblioteca Digital de Teses e Dissertações do ITA |
instname_str |
Instituto Tecnológico de Aeronáutica |
instacron_str |
ITA |
institution |
ITA |
repository.name.fl_str_mv |
Biblioteca Digital de Teses e Dissertações do ITA - Instituto Tecnológico de Aeronáutica |
repository.mail.fl_str_mv |
|
subject_por_txtF_mv |
Controle automático de aterrissagem Regulador linear quadrático Controle de voo Controle longitudinal Estabilidade de aeronaves Aerodinâmica Engenharia aeronáutica |
_version_ |
1706809292232851456 |